102315311 has 4 divisors (see below), whose sum is σ = 116931792. Its totient is φ = 87698832.

The previous prime is 102315251. The next prime is 102315319. The reversal of 102315311 is 113513201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102315311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102315311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102315319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308230 + ... + 7308243.

It is an arithmetic number, because the mean of its divisors is an integer number (29232948).

Almost surely, 2^102315311 is an apocalyptic number.

102315311 is a deficient number, since it is larger than the sum of its proper divisors (14616481).

102315311 is an equidigital number, since it uses as much as digits as its factorization.

102315311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14616480.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 102315311 is about 10115.1031136613. The cubic root of 102315311 is about 467.7138274698.

Adding to 102315311 its reverse (113513201), we get a palindrome (215828512).

The spelling of 102315311 in words is "one hundred two million, three hundred fifteen thousand, three hundred eleven".